[sdiy] noise maker

[Brian Knox]

i am primarily a guitar, but i like things that make noise.  Does anybody know of a simple schematic that i could use to make some sort of noise maker that i could plug in my effects loop to my guitar.  I would use this to fill up the silence and make noise while i am tuning.  i was also wondering about vco's.  Could i use one of these to generate some sort of waveform and then just be able to manipulate with a couple of pots.  I dont really know what i am looking for.  I have built guitar effects before, but havent had much practice in synth building.  i am just looking for something that will produce a tone/noise and i could change the pitch of the tone possibly bringing it down to a low rumble.  something that will make spacey laser sounds.  sorry that this message jumps around so much.  hope someone can help me.  thanks.  bk.
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